Direct Impact Test: Seal held through the whole test; unfortunately, the steel did not. We punctured it after 10 blows.

Bottom Line: If you're looking for a growler to throw into your bag without worrying, get the Braüler. It doesn't leak and is easy to pour. But if you want to keep your ale cold for as long as possible, the exceptional Hydro Flask won't let you down. Fill up. Drain. Repeat